Common Steel Pipe End Types and Their Applications: Beveled, Threaded, and Plain Ends

        In the design and construction of pipeline projects, the treatment of steel pipe ends directly determines the connection strength, sealing performance, and on-site construction efficiency. Whether using seamless steel pipe or welded steel pipe, selecting the correct end type is crucial to ensuring the integrity of the entire system.

        As a seasoned steel pipe manufacturer, Hebei Metal not only provides high-quality pipes but also offers diverse custom end-of-pipe services according to international standards such as ASME B16.25 and ASTM A53. This article will provide an in-depth understanding of three of the most common pipe end types and their application scenarios.

        Ⅰ. Why are pipe end types so important?

        Pipe ends are the interfaces where steel pipes connect to other components of the piping system (such as flanges, valves, and other pipe sections). Different connection techniques (welding, threaded connections, mechanical connections) require different pipe end processing. Choosing the wrong type can lead to installation failure or leaks at the connection.

        Ⅰ. Beveled Ends (BE)

        A beveled end refers to machining the pipe end at a specific angle to create space for butt welding. This is the most common treatment method for industrial pressure pipelines.

        1. Core Standards and Specifications

        • Common Angle: The most standard bevel angle is 30° (+5°C, -0°C), with a root face of approximately 1.6mm.

        • Applicable Standards: Complies with ASME B16.25 standard.

        2. Application Scenarios

        • High-Pressure Systems: Widely used in oil, natural gas, chemical processing, and power plant boiler piping.

        • Large-Diameter Pipelines: Beveled connections provide strength equivalent to the pipe material itself, suitable for long-term pressure bearing.

        Ⅱ. Threaded Ends (TE)

        Threaded ends typically refer to pipe ends with external threads machined on them, assembled using threaded couplings. They are usually labeled T&C (Threaded and Coupled).

        1. Core Standards: NPT (American Standard) or BSPT (British Standard).

        2. Application Scenarios:

        • Low-pressure transmission: Commonly used in fire protection systems, water supply and drainage pipelines, and small-scale gas transmission.

        • Easy disassembly requirements: Suitable for applications where hot work and welding are inconvenient or where future disassembly and maintenance are required.

        • Small-diameter pipes: Typically used for steel pipes with an outer diameter of 4 inches or less.

        Ⅲ. Plain Ends (PE)

        A flat end refers to a pipe end that is cut cleanly along the vertical axis without beveling or threading.

        1. Connection Methods

        Socket Weld: The steel pipe is inserted into the fitting's bore and welded. This is commonly used for small-diameter, high-pressure pipelines. Connections are made via socket welding or using mechanical couplings.

        2. Application Scenarios

        • Structural Uses: Building structural components, scaffolding, or mechanical parts where fluid sealing is not required.

        • Low-Pressure Decoration: For MITEK stainless steel products, flat ends are commonly used in decorative projects such as handrails and fences.

        Ⅳ. How to Customize Your Pipe Ends at Hebei Metal?

        Hebei Metal offers fully automated pipe end processing services, ensuring that every steel pipe leaving the factory is ready for direct use in construction:

        • High-Precision Machining: Threads and bevels are machined using CNC machine tools, with errors controlled to the millimeter level.

        • Professional Protection: For Beveled Ends, we provide standard plastic protective caps; for Threaded Ends, we add thread protectors.

        • Multiple Customization Options: We support special customizations such as one end flat, one end beveled, or pipes with holes.

        Conclusion

        Choosing the right pipe end type can significantly reduce construction costs and extend the lifespan of your piping system. At Hebei Metal, we not only provide products but also offer professional engineering selection advice.

        If you are unsure which pipe end to choose for your project, or if you require fabrication that meets specific API 5L or ASTM standards, please contact our technical team immediately for a quote.